HTPC to Pioneer VSX-521-k to TV problem

So if there's anyone out there that has any experience with Pioneer A/V Receivers? I'm having an issue with being able to get signal through my Pioneer VSX-521-K through my system. Basically, my setup runs just fine from the HTPC to the TV through HDMI just fine, but any time I attempt to put the receiver in between, all I get is an alternating blue/black screen that recycles every 2 seconds or so, with no sound as well. I know that the receiver will pass video through for some sources, as my XBox passes through the receiver to the TV just fine, I just can't figure out the HTPC at all. I'm running my HTPC with an Asus F1A75-M board that I've tried with both current and older drivers, but I can't seem to get it to work. Could this be an HDCP handshake issue, or does anyone have any experience or thoughts on how to get this fixed? I can't seem to find anything anywhere online about it.

Yeah, that's basically what I've done, I've changed out HDMI cables, tested them, they all worked straight, going to try and initiate a dual monitor and try to set up differing resolutions to see if anything at all will pass though, but I'm basically at my wit's end about it, and can't find any documentation anywhere that would help.